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note what each of the argument registers in setregs() will be used 

for by crt0.  Actually clear a1 and a2, because unless a shared loader (i.e.
_not_ the kernel) set them when invoking crt0, they should be zero, and
the kernel DEBUG code wouldn't necessarily have them be.  Pass a pointer
to the proc's ps_strings structure in a3.
This commit is contained in:
cgd 1996-12-07 19:45:14 +00:00
parent fa1d4fc6d7
commit 0e3d6291e3
1 changed files with 5 additions and 3 deletions
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8
sys/arch/alpha/alpha/machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: machdep.c,v 1.61 1996/12/07 01:54:49 cgd Exp $ */ /* $NetBSD: machdep.c,v 1.62 1996/12/07 19:45:14 cgd Exp $ */
/* /*
* Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University. * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
@ -1388,8 +1388,10 @@ setregs(p, pack, stack, retval)
tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET; tfp->tf_regs[FRAME_PS] = ALPHA_PSL_USERSET;
tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3; tfp->tf_regs[FRAME_PC] = pack->ep_entry & ~3;
tfp->tf_regs[FRAME_A0] = stack; tfp->tf_regs[FRAME_A0] = stack; /* a0 = sp */
/* a1 and a2 already zeroed */ tfp->tf_regs[FRAME_A1] = 0; /* a1 = rtld cleanup */
tfp->tf_regs[FRAME_A2] = 0; /* a2 = rtld object */
tfp->tf_regs[FRAME_A3] = PS_STRINGS; /* a3 = ps_strings */
tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */ tfp->tf_regs[FRAME_T12] = tfp->tf_regs[FRAME_PC]; /* a.k.a. PV */
p->p_md.md_flags &= ~MDP_FPUSED; p->p_md.md_flags &= ~MDP_FPUSED;